[PU4, Powers] What does Cosmic power modifier actually do?

[David Johnston2]

Originally Posted by Gurps Fan

Yes, Powers says that the first +50% portion of any Cosmic modifier is counts as a power modifier, but that's strange. That means that if I buy any of instances of Cosmic listed on pp. 6-9 in PU4 for any of my ability, it automatically becomes one that "originates from primordial energy of cosmic somesuch" because it's now part of Cosmic power.

No it isn't. Either you have the cosmic power source or you don't. Having the cosmic power source means that every single advantage you have has some kind of cosmic modifier, but not vice versa.